Gino beboba



G. REBORA. SHUTTER MECHANISM FOR SEARCHLIGHTS. APPLICATION FILED SEPT. 24. 1918.

1,306,077 Patented June 10,1919

Zn/I/Z M/fdf: 05 77 fiej GINO REBORA, OF MILAN, ITALY.

SHUTTER MECHANISM FOR SEARCHLIGHTS.

Specification of Letters Patent.

Patented June 10, 1919.

Application filed September 24 1918. Serial No. 255,525.

To all whom it may concern:

Be it known that I, GINO RnBoRA, a subject of the King of Italy, residing at Milan, Kingdom of Italy, have invented certain new and useful Improvements in Shutter Mechanism for Searchlights, of which the following is a specification.

This invention relates to shutter-operating mechanisms, and more particularly to mechanisms for operating the shutters of search-lights. It comprises an improved operating mechanism of the character indicated for controlling the movements of the shutter from a distance, and is designed primarily for use in connection with searchlights of the type which are mounted for both vertical and horizontal turning or swinging movements.

In the accompanying drawing, Figure 1 is a diagrammatic view representing the general arrangement of parts; Figs. 2 and 3 are respectively, a side elevation and a front elevation of the search-light, showing its manner of mounting; and Fig. 4 is a diagrammatic view showing the shutter mechanism.

Thehorizontal and vertical movements of the search-light K are obtained by means of two separate electric motors O and V, which are actuated and regulated independently of each other from the distant control station R, a multiple cable L and suitable resistances and controllers being employed for that purpose. The resistances and controllers form no part of the invention, however, and they may be disposed in any desired manner. The particular construction of the motors O and V is likewise immaterial to the invention; but the motor 0 which effects the horizontal movements of the search-light is preferably arranged in some, suitable manner upon the base K of the search-light, while the motor V for effecting the vertical movements thereof is carried by the yoke or bracket K in which the searchlight is directly mounted, as indicated in Figs. 2 and 3. Contact and slip rings (or flexible cables) serve to insure the continuity of the electric current between the fixed and movable parts of the search-light.

The search-light is equipped with a shutter Z, which may be of any desired character and which, since it forms in itself no part of the actual invention, requires no special illustration, the one indicated diagrammatically in Figs. 1 and 4 being of the Venetian-blind type having movable slats Z. This shutter is operated by means of a motor P, which transmits its movements to a crank disk A and pitman B, the latter being pivotally connected to the lever C which, in turn, is pivotally connected to the shutter.

At each half-revolution of the crank disk A, the free or far end of the pitman moves from the point B to the point B and vice versa, as will be understood from Fig. 1, the shutter being opened during the movement from B to B, and closed during the reverse movement from B to B and if at the completion of each stroke or halfrevolution the current of the small motor P is automatically shut ofi, the operation will thus be limited according to the desired arrangement.

By cutting in the push button T, the circuit in which the solenoid S is included will be closed, the solenoid will be energized, its core S will be attracted, and the switch I which is connected to said core will be closed. The IDOtOI P will revolve, opening and closing the shutter until the stops X and Y strike against and release the small springcontrolled latch D, whereupon the controlling spring S connected to the solenoid core S will retract said core, thereby opening the switch I. This breaks the motor circuit, and the motor then stops running. The switch I is cut in electrically and cut out mechanically at the end of each operation, both actions being efi'ected automatically.

I claim 1. A mechanism for operating the shutter of a search-light comprising a crank disk, a lever system adapted to connect the crank disk with the shutter, a motor for rotating said crank disk, a circuit wherein the motor is. included, a solenoid, a solenoid circuit, means for momentarily closing the solenoid circuit, a' switch for the motor circuit controlled by the core of the solenoid, means for holding the solenoid core in attracted position, and means for automatically releasing said holding means at predetermined intervals to permit the retraction of said core and the consequent opening of the motor switch.

2. A mechanism for operating the shutter of a search-light comprising a crank disk, a lever system adapted to connect the crank disk with the shutter, a motor for rotating said crank disk, a circuit wherein the motor is included, a solenoid, a solenoid circuit, means for momentarily closing the solenoid circuit, a switch for the motor circuit controlled by the core of the solenoid, means for holding the solenoid core in attracted position, and means operated by the crank disk for automatically releasing said holding means after a movement of the crank disk of predetermined extent to permit the retraction of said core and the consequent opening of the motor switch. a r 3. A mechanism for operating the shutte of a search-light comprising a crank disk, a lever system adapted to connect the crank disk with the shutter, a motor for rotating said crank disk, a circuit wherein the motor is included, a solenoid, a solenoid circuit, means for momentarily closing the solenoid circuit, a switch for the motor circuit controlled by the core or" the solenoid, means for holding the solenoid core in attracted position, and means on said crank disk for automatically releasing said holding means at each half-revolution of the crank disk to permit the retraction of said core and the consequent opening of the motor switch.

i. A mechanism for operating the shutter of a search-light comprising a crank disk, a lever system adapted to connect thecrank Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

5. A mechanism for operating the shutter of a search-light comprising a crank disk, a lever system adapted to connect the crank disk with the shutter, a motor for rotating said crank disk, a circuit wherein the motor is included, a solenoid, a solenoid circuit,

means for momentarily closing the solenoid circuit, a switch for the motor circuit controlled by the core of the solenoid, a latch to engage and hold the solenoid core in attracted position, and a pairof stops on said crank disk to engage and release the latch at each half-revolution of the crank disk to permit the retraction of said core and the consequent opening of the motor switch.

In testimony whereof I aiiix my signature.

GINO nEBonA.

Washington, D. C. 

